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The Cisco PGW 2200 and Cisco BTS 10200 provide signaling connectivity to the SS7 network and provide all the functions for
signaling and SS7 network management. The access servers provide digital Inter Machine Trunk (IMT) interfaces for completion of
the calls. Control traffic is logically separated from management and customer data to provide greater information security and reliability.
Resource management, call control, and system health monitoring complement SS7 to facilitate network scalability. The Cisco PGW
2200 or Cisco BTS 10200 can be at a centralized location or distributed.
To connect to the PSTN as a network element, the Cisco solution supports 2- and 4-wire continuity check and test calls at the Cisco
AS5850 Universal Gateway. TDM switching plus network-side ISDN capability provide a means of grooming incoming traffic and
passing selected calls to external devices, such as PBXs, test sets, or VoIP gateways.
The Cisco AS5850 Universal Gateway also works with several partner call agents and Cisco softswitches in an MGCP configuration
providing centralized call-control architecture.
Full Cisco IOS Software Support for IP Services
The Cisco AS5850 Universal Gateway has four software-image options.
●
Service Provider Plus feature set, which is the full Cisco IOS Software Service Provider feature set with all non-IP functions
removed (for example, Internetwork Packet Exchange [IPX], AppleTalk, Systems Network Architecture [SNA], and so on)—
This image option provides a complete palette of software functions to enable rapid deployment of feature-rich IP services using
the Cisco AS5850 Universal Gateway. Important features include H.323v2, H.323v3, H.323v4, SIP, MGCP 1.0, IVR, T.38 fax, fax
and modem pass-through, carrier-sensitive routing, CAC, full RADIUS support (standard IETF plus third-party vendor-proprietary
extensions), L2TP, QoS, IP Multicast , resource pool management for wholesale services, extended ACLs, and AOL support.
●
IP Security (IPsec) with 40- and 56-bit RC5, Data Encryption Standard (DES)—This image includes all the features of the Service
Provider Plus image in addition to IPsec support.
●
Triple DES (3DES) plus automated key distribution—This image includes all the features of the Service Provider Plus image in
addition to 3DES support.
●
Legal Intercept—This image includes all the features of the Service Provider Plus image in addition to the support for Legal
Intercept.
Multivendor Back-Office Integration
The Cisco AS5850 Universal Gateway supports the RADIUS protocol for back-office integration, control, and network security. In
addition to supporting the IETF-defined RADIUS attributes, Cisco IOS Software supports many vendor-proprietary RADIUS attributes
for both preauthentication and user authentication, meaning that the Cisco AS5850 can be integrated into any multivendor remote-access
network with no changes to the back-office systems.
Worldwide Certification
The Cisco AS5850 Universal Gateway is homologated worldwide with all major T1 and E1 switch types. For ISDN PRI, the switch types
and feature sets supported are listed in Table 1.
Table 1. Supported Switch Types and Features
Supported Switch Hardware Supported Software Supported Feature of Interest
5ESS (Lucent) PRI custom and NI-2, Net5, and NTT NFAS with NI-2
4ESS (Lucent) PRI custom NFAS
DMS 100 (Nortel) PRI custom NFAS
DMS 250 (Nortel) PRI custom NFAS
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